Drip-cock valve for vacuum-brakes



(No Model.) 2 Sheets-Sheet; L E. D. EAMES. Drip (Jock Valve. for Vacuum-Brakes.

No. 228,745. Patented June 15,1880.

M. PETERS, PHOTO-LITNOGRAPMER, WASHINGTON. 0. c4

2 Sheets-Sheet 2;

(No Model.)

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N. PETERS. PHOTO-LITNOGRAPHER, WASHINGTON. D.C.

UNITED STATES PATENT OFFICE.

ELISHA D. EAMES, or QWATERTOWN, NEW YORK.

DRIP-COCK VALVE FOR VACUUM-BRAKES.

SPECIFICATION forming part of Letters Patent No. 228,745, dated June 15, 1880.

Application filed March 4. 1880.

tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon. whichform a part of this specification.

Figure 1 represents a side elevation of a portion of a locomotive having vacuum-brake attachments and showing my improvement applied thereto. Fig.2 represents a central vertical section of my improved device, showing internal construction.

My invention is principally intended for use in connection with a vacuum-brake apparatus.

The object of my present invention is to prevent steam and water from the ejector of a vacuum brake apparatus remaining in the brake or air pipes, or passing through said airpipes to thebrakin g diaphragms and cylinders, and there to accumulate and injure the apparatus and destroy the eflicicncy of its operation.

To remedy these defects I provide the brakepipe with a drip-pocket or condensin g-chamber, and a valve at any point in the air or brake pipes between the ejector and the connection to the first braking diaphragm or cylinder, for the purpose of collecting and disposing of the water of condensation which may leak back into the air-pipe from the ejector.

To enable others skilled in the art to make, construct, and use my invention, I will now proceed to describe it in detail, omitting a particular description of such parts of a brake apparatus as are unnecessary to a proper understanding of the presentinvention.

Arepresents an ejector, attached to and communicating with the locomotive-boiler B. 0 represents an air or brake pipe ,which communicates with the ejector, and, through flexible connections, with the braking diaphragms and cylinders throughout the train. D represents a drip-pocket or condensing-chamber located at a point in the air-pipe 0 between the ejector (No model.)

A and the first diaphragm or cylinder connected therewith. In this instance the drippocket is arranged upon the locomotive, which arrangement is deemed preferable in carrying out the invention.

Referring to Fig. 2, which illustrates the illternal construction of the comlensing-chamher or drippocket l), E represents a cylinder open at top, and which is provided atits lower end with a central tube, 0, projecting downwardly, and provided with an external screwthread. To the upper end of cylinderE is fitted, by means of a screw-thread or otherwise, a cap-piece, F, having a downwardly internally-projecting tube, f, the upper opening of which passes through the cap F, and is provided at said end with an internal screwthread, for the reception of one end of the brake-pipe C. At the side of cylinder E, near its top, is formed an opening for the reception of one end of brake-pipe 0, the two ends of the brake or air pipe having, through the drip-pocket D, a free and unobstructed communication with each other and with the ejector and braking diaphragms and'cylinders throughout the train.

A chamber, G, is secured, by means of a screw-th read or in any othersuitable way, to the tube 6 of chamber E, and is provided with a cap-piece, g, secured to the bottom, and which carries a valve, i, and valve-stem, whose seat is the lower end of tube 0. To the chamber G is attached a drip-pipe, h, which allows the water received into said chamber from the drip-pocket chamber E to pass freely off. The chamber E mayhave a perforated diaphragm, H, or equivalent, placed across said chamber, of concavo-convex or any other suitable form, having a central aperture formed in it to receive the lower end of tube f. Above the diaphragm H may be placed a quantity of suitable material, for the purpose of aiding in condensing the steam which may be left in the air-pipes C; but this diaphragm and material for facilitating the condensation of the steam may be dispensed with if desired.

So long as a vacuum is maintained in the air-pipes O the valve 1' will seat itself by the pressure of the external atmosphere upon its outer side and prevent the destruction of the vacuum. The water of condensation which may leak back from the ejector will be collected into the pocket or cylinder D, and thus be prevented from passing on through the airpipe to the braking diaphragms and cylinders, and thereby injure them and impair their operation. Upon the destruction of the vacuum in the air-pipes and cylinders the valve i, having no pressure exerted upon it, will fall and open by its gravity, and allow the water which has collected in pocket E to pass off through drip-pipe h.

In case steam should pass through tube f without being condensed, and continue on through pipe 0 to the braking cylinders and diaphragms, a quantity of material for coir (lensing such steam is introduced into cylinder E above diaphragm H, as before described, to prevent such passage. This material condenses all the steam which may get into the pocket, the water of which passes through tube 6 and off by drip-pipe It.

It is evident that my device may be employed in a compressed-air or other brake apparatus where steam is used as the motive power by modifying the valve device so as to be applicable thereto.

Having described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a vacuum-brake apparatus, a valve located in the air-pipe at any point between the ejector and the first diaphragm or brakingcylinder, for the purpose of disposing of the water of condensation from the ejector, substantially as set forth.

2. A collecting-pocket or condensing-chamber located in the air-pipe of a vacuum-brake apparatus at any point between the ejector and the first braking diaphragm or cylinder, for the purposes set forth.

3. In a vacuum-brake apparatus, the collecting-pocket D, in combination with valve 41, substantially as and for the purpose set forth.

4. The pocket D, having diaphragm H, and condensing material arranged above said diaphragm, substantially as set forth.

In testimony whereof I affiX my signature in presence of two witnesses.

ELISHA D. EAMES.

Witnesses: CHAS. D. BINGHAM, F. S. HUBBARD. 

